The two singers were joined by Damian Lewis, Gina Gershon, designer Donna Karan and hosts Sting and his wife Trudie Styler at “Baby It’s Cold Outside”: The 2016 Revlon Holiday Concert for The Rainforest Fund Gala held at JW Marriott Essex House on Wednesday (December 14) in New York City.

Idina, Jennifer and Sting hit the stage to raise awareness for the work of the Rainforest Fund, which provides to communities of indigenous peoples throughout Brazil and other countries, including Belize, Cameroon, Costa Rica, El Salvador, Guatemala, Guyana, Honduras, Indonesia, Madagascar, Mexico, Nicaragua, Papua New Guinea, Peru, Suriname and Venezuela.

“One of the things about this night, the audience comes expecting to see unusual combinations of singers,” Sting said in the press release. “Because I’ve never recorded it, everyone lets their hair down. We raise a good amount of money for what I consider to be an incredibly important cause, but they have one heck of a night.”

10+ pictures inside of Idina Menzel, Damian Lewis and others at the fundraiser…